=head1 SYNOPSIS
B<openssl dgst>
-[B<->I<digest>]
+[B<-I<digest>>]
[B<-help>]
[B<-c>]
[B<-d>]
Print out a usage message.
-=item B<->I<digest>
+=item B<-I<digest>>
Specifies name of a supported digest to be used. To see the list of
supported digests, use the command C<list --digest-commands>.